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| author | Mike Frysinger <vapier@gentoo.org> | 2023-12-06 20:08:01 -0700 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2023-12-15 21:14:13 -0500 |
| commit | 81a3befa0ac2ed1e7b2562c1a12d188623c5c3d1 (patch) | |
| tree | 85d33a8cb7dcc20ccb3d240d6c4a6ddc8c16b27e /sim | |
| parent | 18054f49ca94b9e9e9d5791abb83ee2967190583 (diff) | |
| download | gdb-81a3befa0ac2ed1e7b2562c1a12d188623c5c3d1.zip gdb-81a3befa0ac2ed1e7b2562c1a12d188623c5c3d1.tar.gz gdb-81a3befa0ac2ed1e7b2562c1a12d188623c5c3d1.tar.bz2 | |
sim: mn10300: fix incorrect implementation of a few insns
Fix a few problems caught by compiler warnings:
* Some of the asr & lsr insns were setting up the c state flag,
but then forgetting to set it in the PSW. Add it like the other
asr & lsr variants.
* Some of the dmulh insns were multiplying one of the source regs
against itself instead of against the other source reg.
* The sat16_cmp parallel insn was using the wrong register in the
compare -- the reg1 src/dst pair are used in the sat16 op, and
the reg2 src/dst pair are used in the add op.
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/mn10300/am33.igen | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sim/mn10300/am33.igen b/sim/mn10300/am33.igen index da8f88f..a3a40b7 100644 --- a/sim/mn10300/am33.igen +++ b/sim/mn10300/am33.igen @@ -2706,7 +2706,7 @@ n = (State.regs[dstreg] & 0x80000000); PSW &= ~(PSW_Z | PSW_N | PSW_C); - PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)); + PSW |= ((z ? PSW_Z : 0) | (n ? PSW_N : 0) | (c ? PSW_C : 0)); } // 1111 1011 0101 1101 Rm Rn Rd; lsr Rm,Rn,Rd @@ -2730,7 +2730,7 @@ n = (State.regs[dstreg] & 0x80000000); PSW &= ~(PSW_Z | PSW_N | PSW_C); - PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)); + PSW |= ((z ? PSW_Z : 0) | (n ? PSW_N : 0) | (c ? PSW_C : 0)); } // 1111 1011 0110 1101 Rm Rn Rd; asl Rm,Rn,Rd @@ -3252,10 +3252,10 @@ dstreg2 = translate_rreg (SD_, RD2); temp = ((int32_t)(State.regs[srcreg1] & 0xffff) - * (int32_t)(State.regs[srcreg1] & 0xffff)); + * (int32_t)(State.regs[srcreg2] & 0xffff)); State.regs[dstreg2] = temp; temp = ((int32_t)((State.regs[srcreg1] >> 16) & 0xffff) - * (int32_t)((State.regs[srcreg1] >>16) & 0xffff)); + * (int32_t)((State.regs[srcreg2] >> 16) & 0xffff)); State.regs[dstreg1] = temp; } @@ -3275,10 +3275,10 @@ dstreg2 = translate_rreg (SD_, RD2); temp = ((uint32_t)(State.regs[srcreg1] & 0xffff) - * (uint32_t)(State.regs[srcreg1] & 0xffff)); + * (uint32_t)(State.regs[srcreg2] & 0xffff)); State.regs[dstreg2] = temp; temp = ((uint32_t)((State.regs[srcreg1] >> 16) & 0xffff) - * (uint32_t)((State.regs[srcreg1] >>16) & 0xffff)); + * (uint32_t)((State.regs[srcreg2] >> 16) & 0xffff)); State.regs[dstreg1] = temp; } @@ -8646,7 +8646,7 @@ dstreg1 = translate_rreg (SD_, RN1); dstreg2 = translate_rreg (SD_, RN2); - genericCmp (State.regs[dstreg2], State.regs[dstreg1]); + genericCmp (State.regs[srcreg2], State.regs[dstreg2]); if (State.regs[srcreg1] >= 0x7fff) State.regs[dstreg1] = 0x7fff; else if (State.regs[srcreg1] <= 0xffff8000) |